CN112853386B

CN112853386B - Hydrogen and oxygen generator

Info

Publication number: CN112853386B
Application number: CN202110187222.9A
Authority: CN
Inventors: 张涛恭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-11
Filing date: 2021-02-18
Publication date: 2023-03-21
Anticipated expiration: 2041-02-18
Also published as: CN112853386A

Abstract

The invention discloses a hydrogen and oxygen generator, which comprises a shell, a hydrogen and oxygen generating assembly, a water tank module and an electric control plate, wherein the hydrogen and oxygen generating assembly, the water tank module and the electric control plate are arranged in the shell; the water tank module comprises a tank body and an upper cover, a water storage cavity for storing water is arranged in the tank body, a water outlet pipe communicated with the water storage cavity is further arranged on the tank body, a first gas-liquid separation cavity and a second gas-liquid separation cavity are further arranged in the tank body, a hydrogen connecting pipe communicated with the first gas-liquid separation cavity is further arranged on the tank body, and a water return pipe communicated with the second gas-liquid separation cavity is further arranged on the tank body; the upper cover is provided with a hydrogen outlet joint and an oxygen outlet joint, the upper cover is arranged on the upper part of the box body and respectively seals the upper port of the water storage cavity, the upper port of the first gas-liquid separation cavity and the upper port of the second gas-liquid separation cavity, the hydrogen outlet joint is communicated with the first gas-liquid separation cavity, and the oxygen outlet joint is communicated with the second gas-liquid separation cavity. Realize the automatic separation gas-water to satisfy the user to the oxygen of breathing in of hydrogen and oxygen, in order to improve user experience nature.

Description

Hydrogen and oxygen generator

Technical Field

The invention relates to the technical field of water electrolysis, in particular to a hydrogen-oxygen generator.

Background

At present, the production of hydrogen by electrolysis of water is a conventional way for obtaining hydrogen in daily life, and chinese patent No. 201910043216.9 discloses a hydrogen and oxygen generator, which is provided with a hydrogen and oxygen generating assembly and a water tank, wherein the water tank supplies water to the hydrogen and oxygen generating assembly, and the hydrogen and oxygen generating assembly electrolyzes water by positive and negative electrodes to generate hydrogen and oxygen. For hydrogen, dispose two storehouses on the water tank and realize the separation of hydrogen and water, however, for oxygen, because oxygen directly flows back to the water tank along with rivers, effective gas-water separation can't be carried out to oxygen, and the water content of oxygen is great, leads to user experience nature relatively poor. Therefore, how to design a hydrogen-oxygen generator which is convenient for users to use so as to improve the user experience is the technical problem to be solved by the invention.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the oxyhydrogen generator is used for automatically separating gas and water to meet the requirement of a user on the inspiration oxygen of the hydrogen and the oxygen so as to improve the user experience.

The invention provides a hydrogen-oxygen generator, which comprises a shell, and a hydrogen-oxygen generating assembly, a water tank module and an electric control plate which are arranged in the shell, wherein the hydrogen-oxygen generating assembly is provided with a circulating water inlet, a circulating water outlet and a hydrogen outlet, the electric control plate is electrically connected with the hydrogen-oxygen generating assembly, the water tank module comprises a tank body and an upper cover, a water storage cavity for storing water is arranged in the tank body, the tank body is also provided with a water outlet pipe communicated with the water storage cavity, the tank body is also provided with a first gas-liquid separation cavity and a second gas-liquid separation cavity, the tank body is also provided with a hydrogen connecting pipe communicated with the first gas-liquid separation cavity, and the tank body is also provided with a water return pipe communicated with the second gas-liquid separation cavity; the upper cover is provided with a hydrogen outlet joint, an oxygen outlet joint and a water replenishing port, the upper cover is arranged at the upper part of the box body and respectively seals an upper port of the water storage cavity, an upper port of the first gas-liquid separation cavity and an upper port of the second gas-liquid separation cavity, the hydrogen outlet joint is communicated with the first gas-liquid separation cavity, the oxygen outlet joint is communicated with the second gas-liquid separation cavity, and the water replenishing port is communicated with the water storage cavity; the water outlet pipe is connected with the circulating water inlet through a pipeline, the water return pipe is connected with the circulating water outlet through a pipeline, and the hydrogen connecting pipe is connected with the hydrogen outlet through a pipeline.

Furthermore, a vertically arranged extension pipe is arranged in the second gas-liquid separation cavity, and the lower end part of the extension pipe is connected with the water return pipe.

Furthermore, a communicating hole communicated with the water storage cavity is formed in the bottom of the second gas-liquid separation cavity.

Further, a water outlet communicated with the first gas-liquid separation cavity is formed in the bottom of the box body, and the water outlet is also communicated with the water storage cavity; the water tank module further comprises a floating body, and the floating body is arranged in the first gas-liquid separation cavity and used for opening and closing the water outlet.

Furthermore, a pressure control module for forming positive pressure in the first gas-liquid separation cavity is arranged on the hydrogen outlet joint.

Further, the pressure control module is a backpressure valve arranged on the hydrogen outlet joint; or the pressure control module comprises a connecting air pipe and an aeration stone, the aeration stone is plugged in the connecting air pipe, and the connecting air pipe is connected with the hydrogen outlet joint.

Further, a connecting port communicated with the water storage cavity is also arranged at the bottom of the box body; the bottom of the box body is further provided with an annular check ring, the water outlet and the connecting port are both located in an area formed by the annular check ring in a surrounding mode, the annular check ring is further provided with a lower sealing cover, and the lower sealing cover seals the edge of the annular check ring.

Furthermore, an overflow pipe communicated with the connecting port is arranged in the water storage cavity and is vertically arranged.

Further, the first gas-liquid separation cavity and the second gas-liquid separation cavity have the same structure.

Furthermore, an embedded block is arranged in the water outlet, a convex structure is formed on the upper surface of the embedded block, and a through hole penetrating through the upper surface and the lower surface is formed in the embedded block; the bottom of the floating body is provided with a flexible sealing sheet; when the water outlet is in a closed state, the flexible sealing sheet is abutted against the bulge structure and seals the through hole

Compared with the prior art, the invention has the advantages and positive effects that: through set up independent water storage cavity in the box, first gas-liquid separation cavity and second gas-liquid separation cavity then are used for carrying out gas-liquid separation to hydrogen and oxygen respectively and handle, hydrogen or oxygen that enter into in the gas-liquid separation cavity, in the upward flow in-process, the moisture that contains in the gas then free fall under the action of gravity, in order to realize separating gas and water, and simultaneously, hydrogen and oxygen are then all realized outside output gas through the joint of configuration on covering, and then can be abundant utilize the high space of gas-liquid separation cavity to carry out effectual gas-liquid separation and handle, in order to satisfy the oxygen of breathing in of user to hydrogen and oxygen, in order to improve user experience nature. In addition, the water storage cavity, the first gas-liquid separation cavity and the second gas-liquid separation cavity are formed inside the box body, so that the overall structure is more compact, and the assembly difficulty is simplified.

In addition, for the first gas-liquid separation cavity for hydrogen separation, the floating body is arranged in the first gas-liquid separation cavity, and the water outlet at the bottom of the first gas-liquid separation cavity is opened and closed by the floating body, in the actual use process, under the condition that the accumulated water in the first gas-liquid separation cavity is less, the floating body abuts against the upper side of the water outlet by the weight of the floating body so as to close the water outlet, so that the hydrogen in the first gas-liquid separation cavity can be output from the hydrogen outlet joint at the top, and after the accumulated water in the first gas-liquid separation cavity increases, the buoyancy of the floating body is greater than the gravity of the floating body, the floating body can float for a short time and leave the water outlet so as to open the water outlet, and the accumulated water in the bottom of the first gas-liquid separation cavity is discharged into the water storage cavity through the water outlet under the pressure generated by the hydrogen in the first gas-liquid separation cavity, meanwhile, the water level in the first gas-liquid separation cavity is lowered so that the floating body abuts against the water outlet and is reclosed, so that the accumulated water in the first gas-liquid separation cavity can be automatically conveyed to the water storage cavity for recycling, the user can be cleaned regularly without the user, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of an oxyhydrogen generator according to the invention;

FIG. 2 is a schematic view of a partial structure of an embodiment of the oxyhydrogen generator according to the invention;

FIG. 3 is a schematic structural diagram of a water tank module in an embodiment of the oxyhydrogen generator according to the invention;

FIG. 4 is an exploded view of the tank module of FIG. 3;

FIG. 5 is a second schematic view of the structure of the water tank module in the oxyhydrogen generator embodiment of the invention

FIG. 6 isbase:Sub>A sectional view taken along line A-A of FIG. 5;

FIG. 7 is a partial enlarged view of the area M in FIG. 6;

FIG. 8 is a sectional view taken along line B-B of FIG. 5;

FIG. 9 is an enlarged view of a portion of the region N in FIG. 8;

FIG. 10 is a schematic view of the structure of the case of FIG. 9;

FIG. 11 is a schematic structural view of a water cover;

fig. 12 is an exploded view of the water cap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-10, the present embodiment provides an oxyhydrogen generator, which includes a housing 100, and an oxyhydrogen generation assembly 200 and a water tank module 300 disposed inside the housing 100, wherein the oxyhydrogen generation assembly 200 has a circulation water inlet, a circulation water outlet, and a hydrogen outlet, and the specific entity of the oxyhydrogen generation assembly 200 can be an oxyhydrogen generation component of a conventional oxyhydrogen generator, and specific structural form and working principle of the oxyhydrogen generation assembly 200 are not repeated and limited herein.

Wherein, the water tank module 300 comprises a tank body 1 and an upper cover 2, and the tank body 1 is further provided with a water outlet pipe 101, a water return pipe 102 and a hydrogen connecting pipe 103.

A water storage cavity 11, a first gas-liquid separation cavity 12 and a second gas-liquid separation cavity 13 are arranged in the box body 1, wherein the water storage cavity 11 is used for storing water for electrolysis of the oxyhydrogen generation assembly 200, and the first gas-liquid separation cavity 12 and the second gas-liquid separation cavity 13 are respectively used for gas-water separation treatment of hydrogen and oxygen generated by the electrolysis of the oxyhydrogen generation assembly 200.

The upper cover 2 is provided with a hydrogen outlet joint 21 and an oxygen outlet joint 22, the upper cover is arranged on the upper portion of the box body and respectively seals the upper port of the water storage cavity, the upper port of the first gas-liquid separation cavity and the upper port of the second gas-liquid separation cavity, the hydrogen outlet joint is communicated with the first gas-liquid separation cavity, and the oxygen outlet joint is communicated with the second gas-liquid separation cavity.

A sealing ring 4 is arranged between the upper cover 2 and the upper end part of the box body 1, the sealing ring 4 is clamped between the upper cover 2 and the box body 1, and the upper edge of the water storage cavity 11, the upper edge of the first gas-liquid separation cavity 12 and the upper edge of the second gas-liquid separation cavity 13 are respectively sealed by the sealing ring 4. The hydrogen outlet joint 21 is communicated with the first gas-liquid separation cavity 12, and the oxygen outlet joint 22 is communicated with the second gas-liquid separation cavity 13. In addition, the upper cover 2 is also provided with a water replenishing port 23, the water replenishing port 23 is communicated with the water storage cavity 11, and the water replenishing port 23 is in threaded connection with the water cover 5.

In the actual use process, a user opens the water cover 5 to add water into the water storage cavity 11 through the water replenishing port 23, and the oxyhydrogen generation assembly 200 is powered on to perform water electrolysis operation. The water in the water storage cavity 11 enters the hydrogen and oxygen generating assembly 200 through the water outlet pipe 101 and returns to the second gas-liquid separation cavity 13 from the water return pipe 102, the water returning to the water return pipe 102 is mixed with oxygen, after the oxygen enters the second gas-liquid separation cavity 13, the oxygen is lighter, the oxygen collection and the gas-water separation are fully realized by utilizing the height space of the second gas-liquid separation cavity 13, and the oxygen is output through the oxygen outlet joint 22. And the water in the second gas-liquid separation chamber 13 flows into the water storage chamber 11 through a communication hole 131 formed at the bottom of the second gas-liquid separation chamber 13 and communicated with the water storage chamber 11. Preferably, the water return pipe may extend upward inside the second gas-liquid separation chamber to form an extension pipe (not labeled) arranged vertically, and the extension pipe returns water with oxygen gas into the second gas-liquid separation chamber through the water return pipe. After the oxygen is separated from the water, because the upper end of the extension pipe formed by the water return pipe is higher than the bottom of the second gas-liquid separation cavity 13, the oxygen is prevented from entering the water storage cavity 11 from the bottom of the second gas-liquid separation cavity 13, so that the output quantity of the oxygen is increased.

And a small amount of water is carried into the first gas-liquid separation chamber through the hydrogen adapter 103 for the hydrogen generated by the hydrogen-oxygen generating assembly 200. Since hydrogen gas is lighter and has a smaller water content than water, the hydrogen gas entering the first gas-liquid separation chamber 12 rises and is output through the hydrogen outlet joint 21, and the water contained in the hydrogen gas falls into the bottom of the first gas-liquid separation chamber 12 by gravity.

Wherein a plurality of first gas-liquid separation chambers 12 and a plurality of second gas-liquid separation chambers 13 may be disposed in the case 1 as needed.

Further, as the usage time increases, the bottom of the first gas-liquid separation chamber 12 will store more water. In order to realize automatic drainage, a drainage port 14 communicated with the first gas-liquid separation cavity 12 can be arranged at the bottom of the box body 1, and the drainage port 14 is also communicated with the water storage cavity 11; the water tank module further comprises a floating body 3, and the floating body 3 is arranged in the first gas-liquid separation cavity 12 and used for opening and closing the water outlet 14.

Specifically, as the water amount accumulated at the bottom of the first gas-liquid separation chamber 12 increases, the buoyancy received by the floating body 3 is larger than the gravity of the floating body 3, and then the floating body 3 floats and leaves the water outlet 14 under the action of the buoyancy, so as to open the water outlet 14. After the water outlet 14 is opened, a positive pressure state is formed in the first gas-liquid separation cavity 12 due to the injected hydrogen in the first gas-liquid separation cavity 12, and the accumulated water at the bottom of the first gas-liquid separation cavity 12 is discharged through the water outlet 14 and flows into the water storage cavity 11 by utilizing the air pressure in the first gas-liquid separation cavity 12. In a short time, the water level in the first gas-liquid separation chamber 12 will drop along with it, so that the gravity of the floating body 3 is larger than the buoyancy, and the floating body 3 falls down again and abuts against the water outlet 14 to automatically close the water outlet 14, thereby preventing hydrogen from entering the water storage chamber 11.

Therefore, the floating body 3 is used for controlling the opening and closing of the water outlet 14, and the accumulated water is automatically discharged into the water storage cavity 11 by utilizing the air pressure in the first air-liquid separation cavity 12, so that a user does not need to clean the water in the first air-liquid separation cavity 12 regularly, and the use convenience and the use experience of the user are improved.

Preferably, in order to maintain the gas pressure in the first gas-liquid separation chamber 12 in a positive pressure state, the hydrogen outlet joint 21 is provided with a pressure control module (not shown) for forming a positive pressure in the first gas-liquid separation chamber 12. Specifically, the pressure control module is arranged on the hydrogen outlet joint 21 to limit the output hydrogen, so that the first gas-liquid separation cavity 12 is in a positive pressure state with a certain pressure value. In the positive pressure state, the floating body 3 in the first gas-liquid separation cavity 12 can further utilize the air pressure to more effectively seal and shield the exhaust port, thereby improving the use reliability. Meanwhile, the positive pressure with a certain pressure value can also make the accumulated water quickly discharged out of the first gas-liquid separation cavity 12 by using the air pressure when the water outlet 14 is opened by the floating body 3. The magnitude of the pressure value of the positive pressure in the first gas-liquid separation chamber 12 is not limited herein.

For the pressure control module, the expression entity may adopt a backpressure valve disposed on the hydrogen outlet joint 21, and the backpressure valve may be opened after the pressure in the first gas-liquid separation chamber 12 reaches a set value, so as to meet the requirement of positive pressure in the first gas-liquid separation chamber 12. Or the pressure control module comprises a connecting air pipe and an aeration stone, the aeration stone is plugged in the connecting air pipe, and the connecting air pipe is connected with the hydrogen outlet joint. Specifically, the structural style of connecting trachea and aeration stone is adopted, reduction manufacturing cost that can be better utilizes connecting trachea on the one hand to be used for installing aeration stone to utilize aeration stone microporous structure ventilative and aeration stone can also satisfy the requirement of malleation in the first gas-liquid separation cavity 12, on the other hand connecting trachea still plays simultaneously and carries hydrogen to the outer connecting pipe of configuration on shell 100 on, in order to satisfy the requirement of lowering costs.

Furthermore, an insert block 141 is arranged in the water outlet 14, a convex structure is formed on the upper surface of the insert block 141, and a through hole 141 penetrating through the upper and lower surfaces is arranged on the insert block 141; the bottom of the floating body 3 is provided with a flexible sealing sheet 31; when drain opening 14 is closed, flexible sealing sheet 31 abuts against the protruding structure and seals through hole 141.

Specifically, the insert block 141 is embedded in the drainage opening 14 in a sealing manner, a protruding structure is formed on the upper surface of the insert block 141 to be matched with the flexible sealing sheet 31, and the flexible sealing sheet 31 is greatly deformed to cover the through hole 141 in a sealing manner after contacting the protruding structure on the upper surface of the insert block 141, so that the drainage opening 14 is sealed.

Further, a connecting port 15 communicated with the water storage cavity 11 is also arranged at the bottom of the box body 1; the bottom of the box body 1 is also provided with an annular retainer ring 16, the water outlet 14 and the connecting port 15 are both positioned in the area formed by the annular retainer ring 16, the annular retainer ring 16 is also provided with a sealing lower cover 17, and the sealing lower cover 17 seals the edge of the annular retainer ring 16.

Specifically, the connecting port 15 and the water outlet 14 are surrounded by an annular retainer ring 16, and the lower edge of the annular retainer ring 16 is sealed by a lower sealing cover 17, so that a relatively sealed water flow passage is formed between the lower sealing cover 17, the annular retainer ring 16 and the bottom surface of the tank body 1, and thus, water output from the water outlet 14 enters a flow passage cavity formed by the annular retainer ring 16 and enters the connecting port 15.

In order to prevent the water in the water storage cavity 11 from flowing back into the first gas-liquid separation cavity 12, an overflow pipe 18 communicating with the connection port 15 may be provided in the water storage cavity 11, the overflow pipe being vertically arranged. Specifically, the height of the overflow pipe 18 is designed according to the water level in the water storage cavity 11 so as to meet the requirement that the upper port of the overflow pipe 18 is higher than the water level of the water storage cavity 11, and thus, the water in the water storage cavity 11 can be prevented from reversely flowing into the first gas-liquid separation cavity 12 through the overflow pipe 18.

The contour of the float 3 matches the contour of the inner wall of the first gas-liquid separation chamber 1212, for example, the float 3 may have a circular cross section, so that the float can move up and down in the first gas-liquid separation chamber 12 by buoyancy and gravity. The floating body 3 may be a closed water pipe or other buoyant member, and is not limited thereto.

In addition, still be provided with the drain pipe (not marked) of switch to the bottom of box 1, the drain pipe can adopt the screw plug to carry out the shutoff, when the water in the water storage cavity 11 of needs row, then pull down the screw plug from the drain pipe, alright empty with the water in the water storage cavity 11. If necessary, an epoxy resin filter element 6 for filtering water may be disposed in the water storage cavity 11, the epoxy resin filter element 6 may be positioned in the water storage cavity 11 and inserted into the water replenishing port 23, and water may be treated by passing through the epoxy resin filter element 6 when water is added. Similarly, a water level detector can be further arranged as required to detect the water level in the water storage cavity 11 through the water level detector, so as to automatically alarm and remind when the water level is low, and the specific alarm and reminding mode is not limited to sound and light modes, and is not limited and described herein.

As shown in fig. 11 to 12, a groove 51 is formed on the upper surface of the water cover 5, a vertically arranged plate body 52 is provided on the groove 51, a decoration cover 53 capable of sliding up and down is further provided in the groove 51, a strip-shaped hole (not marked) is provided on the decoration cover 53, the plate body 52 is inserted in the strip-shaped hole, and a return spring 54 is further provided between the decoration cover 53 and the groove 51. Specifically, in order to improve the overall appearance, the water cap 5 is provided with the decoration cap 53 capable of sliding up and down, and the return spring 54 pushes up the decoration cap 53 without operating the water cap 5, so that the decoration cap 53 is in a pushed-up state, and the decoration cap 53 can be substantially flush with the top surface of the housing 100, thereby obtaining a better and excellent appearance effect. When the user needs to detach the water cap 5, the user can rotate the water cap 5 by pressing the decoration cap 53 with fingers and pinching the plate body 52, and the screw thread portion at the lower portion of the water cap 5 is screwed out from the water replenishing port 23. Wherein, the side wall of the groove 51 is provided with two sliding grooves 511 which are oppositely arranged, the edge of the decoration cover 53 is provided with a sliding part 531 which extends outwards, and the sliding part 531 is positioned in the corresponding sliding groove 511. The sliding portion 531 is engaged with the sliding slot 511 to guide the decoration cover 53 to move up and down, and at the same time, the sliding portion 531 is limited in the sliding slot 511, so that the decoration cover is prevented from being separated from the groove 51, thereby improving the reliability of use.

In addition, for the specific structure of the enclosure 100 in this embodiment, the enclosure 1002 generally includes a housing, a base 1003 and a top cover 1001, and the housing 1002 is disposed between the base 1003 and the top cover 1001, reference may be made to the structural form of the enclosure of the conventional oxyhydrogen generator, which is not limited herein. Meanwhile, a corresponding electric control board 400 is also arranged in the casing 100, and a control board for operation is arranged on the surface of the casing 100 and is connected with the electric control board 400, and the electric control board 400 controls the electric components in the oxyhydrogen generator. Similarly, the electrical control board 400 and the operation control board can be configured as a conventional oxyhydrogen generator, and are not limited herein.

Compared with the prior art, the invention has the advantages and positive effects that: through dispose the body in first gas-liquid separation cavity, and utilize the body to come the opening and shutting the outlet of first gas-liquid separation cavity bottom, in the in-service use, under the condition that ponding in the first gas-liquid separation cavity is less, the body utilizes self weight to support and leans on in order to close the outlet in the top of outlet, and then make the hydrogen in the first gas-liquid separation cavity export from the play hydrogen joint at top, and along with the increase of ponding in the first gas-liquid separation cavity, the buoyancy of body is greater than after self gravity, the body will briefly float and leave the outlet in order to open the outlet, receive the pressure effect that hydrogen produced in the first gas-liquid separation cavity, make the ponding of bottom in the first gas-liquid separation cavity discharge into the water storage cavity through the outlet, meanwhile, the water level decline in the first gas-liquid separation cavity makes the body support and leans on the outlet again and recloses the outlet, like this, alright realize automatically carrying the ponding in the first gas-liquid separation cavity to the water storage cavity in the water storage cavity and circulate, and need not the user regularly clear up ponding, convenience is used and user has improved user's experience nature.

Claims

1. A hydrogen-oxygen generator comprises a shell, and a hydrogen-oxygen generation assembly, a water tank module and an electric control plate which are arranged in the shell, wherein the hydrogen-oxygen generation assembly is provided with a circulating water inlet, a circulating water outlet and a hydrogen outlet, and the electric control plate is electrically connected with the hydrogen-oxygen generation assembly; the upper cover is provided with a hydrogen outlet joint, an oxygen outlet joint and a water replenishing port, the upper cover is arranged at the upper part of the box body and respectively seals an upper port of the water storage cavity, an upper port of the first gas-liquid separation cavity and an upper port of the second gas-liquid separation cavity, the hydrogen outlet joint is communicated with the first gas-liquid separation cavity, the oxygen outlet joint is communicated with the second gas-liquid separation cavity, and the water replenishing port is communicated with the water storage cavity; the water outlet pipe is connected with the circulating water inlet through a pipeline, the water return pipe is connected with the circulating water outlet through a pipeline, and the hydrogen connecting pipe is connected with the hydrogen outlet through a pipeline;

the bottom of the box body is provided with a water outlet communicated with the first gas-liquid separation cavity, and the water outlet is also communicated with the water storage cavity; the water tank module also comprises a floating body, the floating body is arranged in the first gas-liquid separation cavity and used for opening and closing the water outlet, and a pressure control module used for forming positive pressure in the first gas-liquid separation cavity is arranged on the hydrogen outlet connector;

the bottom of the box body is also provided with a connecting port communicated with the water storage cavity; the bottom of the box body is also provided with an annular check ring, the water outlet and the connecting port are both positioned in an area formed by the annular check ring, and the annular check ring is also provided with a lower sealing cover which seals the edge of the annular check ring;

an overflow pipe communicated with the connecting port is arranged in the water storage cavity and is vertically arranged, and an upper port of the overflow pipe is higher than the water level of the water storage cavity;

in addition, a vertically arranged extension pipe is arranged in the second gas-liquid separation cavity, the lower end part of the extension pipe is connected with the water return pipe, and a communication hole communicated with the water storage cavity is formed in the bottom of the second gas-liquid separation cavity.

2. The oxyhydrogen generator according to claim 1, wherein the pressure control module is a backpressure valve disposed on the hydrogen outlet connection; or the pressure control module comprises a connecting air pipe and an aeration stone, the aeration stone is plugged in the connecting air pipe, and the connecting air pipe is connected with the hydrogen outlet joint.

3. The oxyhydrogen generator according to claim 1, wherein the first gas-liquid separation chamber and the second gas-liquid separation chamber are identical in structure.

4. The oxyhydrogen generator according to claim 1, wherein the water outlet is provided with an insert block, the upper surface of the insert block forms a convex structure, and the insert block is provided with a through hole penetrating through the upper surface and the lower surface; the bottom of the floating body is provided with a flexible sealing sheet; when the water outlet is in a closed state, the flexible sealing sheet is abutted against the bulge structure and seals the through hole.